To Flatside Or not to Flatside?

Carbs and not the horible kind.
im needing some carbs for my zxr 400 but currently court between flatside carbs or stick with the standard ones.

the bike will be dyno jet stage 2 with full exhaust and filter’s etc.

i know what they basically give you better response and top end power and can also if done correctly give it couple more BHP, which to be frank would be nice but not an asseity.

what do you guys think would be the best thing to do? im all up for it but will it be a pointless move.